Home / 491,434.04-678,388.23-330,382.50

Finding the Fourth Proportional to 491,434.04, 678,388.23 and 330,382.50

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Solution

The fourth proportional to 491,434.04, 678,388.23 and 330,382.50 is: 456,068.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,434.04 : 678,388.23 = 330,382.50 : x
  2. Step 2: Convert to fraction form
    491,434.04/678,388.23 = 330,382.50/x
  3. Step 3: Cross multiply
    491,434.04x = 678,388.23 × 330,382.50
  4. Step 4: Simplify right side
    491,434.04x = 224,127,599,397.98
  5. Step 5: Solve for x
    x = 224,127,599,397.98/491,434.04
  6. Step 6: Final answer
    x = 456,068.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.